Test by yourself with BLUFOR players, name one p1 then add triggers with :
if (player==p1) then {p1 adduniform "U_B_GhillieSuit";};
and another trigger with
if (player==p1) then {p1 adduniform "U_NikosBody";};

When someone launch one of these trigger they will run only on locally P1, notice that P1 is switched to Ghilie suit for everybody connected fine.
Then use the second trigger, notice that only p1 locally see himself as Niko, other still see him with its previous uniform.
(IE only uniform from same side are allowed on character hence broadcasted MP wise even if locally you can enforce an uniform from another side)

It does bug when you use adduniform with a uniform from a different side. If you use adduniform with a uniform of the same side of your class it does work globally.

Great !

Here is my minidump & crasshlog :
http://neobot.fr/arma3/death_crash.7z

Yes, on Stable 0.6 and lastest Dev.
Sometime it doesn't work on the first death (then just respawn again in the menu).

Windows 2008 More crashlogs :
https://dl.dropbox.com/s/yej1buyvsj0i855/Arma%203%20Alpha%20server%20crash%20dump.7z?token_hash=AAGb3WGP1Gg0HEIgxzIconi23wXHgZ9d8vREQBObtL9Nrg&dl=1

After check the waypoint works correctly. Just we have this message error when doing some waypoint manipulation.