Insulin pumps are great for type 1s but can also be beneficial for type 2s. Some medical professionals have the mistaken idea that you should get in good control to be allowed to get a pump, but most diabetics have improved control and use less insulin with one.
A pump definitely takes work and requires frequent gluose testing. However the work is worth it, which is a much different experience than with multiple daily injections. You will have to evaluate if your patient has an understanding of what the pump requires.
The biggest benefit of pumps is they use only short acting insulin, more like a real pancreas. Long acting insulin causes highs and lows when it conflicts with the body's natural basal (base) rate. I use a pump and at different times of day my basal rate varies between 0.525 and 1.35 units an hour. A flat rate of Lantus can't do that.
To get you up to speed I'd recommend John Walsh's book "Pumping Insulin" and also Gary Sheiner's "Think Like a Pancreas." Sheiner's book is targeted to type 1s but has great pump information. He actually offers advanced online pumping classes at www.type1univeristy.com for nominal fees.
I'd had type 1 for 25 years and my A1c was around a 9. Despite my A1c I had frequent severe lows and hypoglycemia unawareness. It felt like no matter what I did I was either high or low and I felt like a pincushion taking 5 shots a day, totalling about 60u of insulin. My hypo unawareness got so bad that my endo said the only option was to start using a pump. I was newly married and didn't want to be connected to a machine, plus back in the 1970's when I was diagnosed I'd seen pumps and they were big and scary. I didn't want a needle in me all the time. Thankfully pump technology had improved a lot since then. It took a couple weeks to get basal rates set and within about 3 months my insulin dose had fallen to 45u a day and my A1c was a 6.9. This was all without making changes to my eating or lifestyle. Best of all, I rarely had lows and my hypoglycemia unwareness reversed. I have not had a severe hypoglycemia in the 11 years since I've used a pump and my A1c has stayed between 6.5 - 6.9, except for when I was pregnant and got in extremely tight control and maintained a 5.1 with no lows below 60. None of this would have been possible without a pump. I was my same self. I had my same knowledge of carb counting and bolusing, but a pump provides accurate dosing and gave me a reason to test. I felt in control of my diabetes for the first time in my life.
It does take work to use a pump. Once or twice a year I'll fast for 24 hours to check my basal rate. It does cost more than injecting. But I am complication-free and am able the be the wife, mom, and employee that I don't think I could have been without a pump. Frankly, I don't know if I would have still been alive on shots. For me the small cons are worth the huge benefits it brings. Most mornings my blood sugar is about 5 points within what it was when I went to sleep the night before. It feels like a miracle.
I attend church with woman who has used a pump for about 6 years of the 20 she has had type 2 diabetes. She has insulin resistance and uses a pump with a larger reservoir (300 units for 3 days). For those who use >2000u there are also pumps for U-500 insulin.
Both you and your patient should read Pumping Insulin and contact the pump manufacturer for a demo. I'd probably start with Medtronic Minimed since they have good customer service and are well represented across the US. Other major companies are One Touch Ping, OmniPod (you can get a free sample off their website), and the t:Slim from Tandem (looks like a smartphone but this company is newer, since you are new to this I'd start with someone more established).
Please contact me if you have any questions.