I'm not much of a PvP'r, I typically just do BG's until I get Caltrops, but I've gotten Caltrops on a lot of different Stamina characters now, and a couple Magicka characters that I planned to become stamina characters.
Out of all of those experiences, me as a mediocre PvP'r, I actually found Stamplar to be the spec I do best with.
This is just me in PvE Medium gear with Divines, on 2h/Bow with just different abilities, but the switch from Magplar to Stamplar was crazy. I thought maybe the first few games were flukes, or suddenly the better players stopped playing for the day, but it was consistently a big difference in my ability to contribute, get kills, and survive. When my next Stamina character (Warden) went through, I found myself missing my Stamplar BG experience, so after I was done getting Caltrops on that I went back to my Stamplar and started doing BGs for fun.
First time I continued to do any PvP after getting Caltrops on any character lol. Maybe I'll actually get PvP/Heavy Impen gear sometime and swap the backbar bow for something else.