Definitely. I fly a 150 that is IFR (incl. Apollo IFR GPS) on a regular basis. My CFI doesn't teach out of that school, though, so I strictly use it for rental/timebuilding. When I finish my IR, though, you bet I'll be flying it some to work on inst proficiency. Can't beat $48/hr. I know 3 people that are using that plane for their IR right now....