I've been initiated to assyms on a small sportboat, with a sprit. Cuts vary, but generally I think they're much more jib than spinnaker, useless on a deep broad reach or a run, unless you can wing out, as they just get blanketed otherwise. And being a big sail you have to reach with to get it to fill, the risk of being overpowered sideways is always there.
Jibing "inside" (most do this) means you have to get the sail fully "wiped" past itself and onto the new jibe *before* you can head up past a run. Pain in the neck if it fills behind the headstay instead of in front of it
I prefer syms. They're "real" spinnakers, not these big, hard-to-jibe reachers.
But good luck anyway.