In working with people from other systems, what is it that the Uechika brings to the table. I thought Tony's answer (below) was really interesting and I wonder if anyone else could chime in...
Trapping and striking from traps. Also low kicks, sweeps, all from very close. I have had alot of success with these techniques against several styles (although it didn't happen over night, I spent quite a while getting my ass kicked) from Shorin, TKD, Enshin, and a few others. Learn those tenshin moves in Hojo Undo, you'll be able to use those to fling people around by their neck.
Oh, and wear head gear because as a Uechi guy, you'll walk right into punches without even realing it. To this day, I am still getting popped in the snazola because of that sanchin stuff. Keep your hands up and protect your face!!! My hands want to go into that sanchin position from all the years of getting kicked and punched while standing there like an idiot. Now it bites me in the ass.