I got the Rebel Touch from Switcheasy for my itouch. It is actually two cases in one: an inner soft, silicone rubber shell and an outer hard plastic case. I chose this design because I like the cushioning of the silicone, but also the outer protection of the hard plastic (in case it falls or whatever). The design is interesting without being too weird like some of the cases out there. I love the functionality of it: it protects all the parts (even the port opening at the bottom), has a screen cover and is thin enough not to make the itouch feel bulky. It doesn't have a hip case though, although I heard some rumors on the website about one coming out soon.
The main reason I bought this case over any others I saw was because I think it should be very easy to use in nursing. I didn't want to deal with the flip style cases (seemed like too much trouble and cannot be cleaned very well), but I still feel my itouch is very protected in this case. I usually prefer silicone over plastic but silicone has a tendency to stick and get dusty. However, with the rebel, the hard plastic outer case makes it slippery enough to slide in and out of a pocket or bag, but the rubber parts make it non-slip in your hand.
Sorry this was so long - I guess it shows how much I really like this case even after a lot of research with other cases. But in the end, the case you choose depends on your likes and needs for your itouch...Good Luck!