Well in cath lab, depending on where you work could be doing cardiac cath (obviously), maybe EP studied, abalations, Pacemaker or AICD implants, TEEs, Cardioversuons. You could have an emergency come from the ER, TAVRs, Watchman LAA closures etc. Both cath lab and interventional radiology are procedural areas so you'll be doing procedures all day. It just depends what kind of procedures you want to do. IR does a lot of lines, PICCs, Permacaths, LPs, angiograms, TIPs, perhaps there may even be Neuro IR where they Coil aneurysms, embolism AVMs or do carotid stenting. Ever place is different and it just depends on what you wanna do.
I don't think you're lazy but just remember it's going to be hard work regardless of what area you choose.