>>3339925>>3339939I haven't developed a roll from my OM-10 yet but I bought it recently because I already prefer OM lenses adapted onto my Sony so I have a few lying around. It made sense to own an SLR to use them as intended.
Like the other anon says, the lenses are high quality and hold up well. Almost all of them have a 49mm filter thread too which is really nice, means buying hoods and caps works out really cheap. OM lenses the most compact vintage lenses you can get.
The XA2 is a different beast, it's a point and shoot that fits in your palm so there's obviously a huge size and weight difference. You also lose a lot of manual control but sometimes I prefer to run and gun with the XA2 over anything else. While the OM-10 is smaller than most SLRs of the time it's still a full size camera shape so not going to be as stealthy as the XA2.
Sorry for the shitty quality phone pic, here are mine side by side.