Nice reload, did it confuse the so?
I'm a longtime IDPA shooter who hasn't shot many USPSA matches for one reason only ... the only ones local to me shoot on Sunday (and I don't).
I agree on the ease of transition ... I've seen many USPSA guys drop the mag while reloading on the move and you can almost see it register half step later
In general, IDPA is more restrictive and I think that's the reason.
Interesting about the muzzle comment. One of the my few USPSA matches had shooters open a door midway thru a string. Potential for self sweeping was there, and I've noticed that all uses of a door in IDPA matches (around here) have been at start of stage. I've also suggested for years (but have given up) having stairs in a stage. I have stairs in my house so I have self interest. Safety has always been given as a reason it's not done.
Now, I'll give my 2 cents as for the bad blood. Numerous reasons:
a. A lot of it is historical, stemming from the way IDPA was formed .. suffice it to say tempers ran a bit hot.
b. Some of it comes from the fact that we promote ourselves as tactically superior .. more realworldish. I actually think that we ARE more tactically correct, tho not without our faults. I think this is insulting, or maybe seen as "silly" .. i.e. that a game could be tactical at all.
c. A big difference is in the way the rules are written. Seems like IDPA tells you what you can do, and USPSA tells you what you can't .. i.e. if it's not explicitly verboten, then it's good to go.
d. Our rules allow a lot of interpretation. round dumping, cover calls, and the overarching FTDR for "spirit violations" come to mind. No one likes earning a penalty, and many just feel they were picked on. SO's are human, and it wouldn't surprise me if some were unfairly penalized.
But yea, many of us (including me) don't have the history of bad blood and would just as soon see it die. I'd also like to see a Saturday match materialize, because thier matches are pretty fun to shoot!
Not trying to bash here, and certainly don't condone the bad blood or state that IDPA sits on higheroads than USPSA.