Well I had my first opportunity to playtest my ruleset this past weekend. Overall, it went very well.
The things I was mainly concerned with were how people unfamiliar with the VP/WP system responded to it, my wound level system, opposed attack/defense rolls, and armor as DR.
Everyone liked the VP/WP system and overall, it was pretty seamless during play. The wound level system didn't really come into play too much - the one guy who took wound damage got critted and was knocked to 0. Same goes for armor as DR - although the bad guys got some experience with that.
I was most interested in seeing the opposed attack/defense rolls in play though. I was pretty surprised at the reponse - everyone loved it! The response to the Dodge/Parry system was excellent as well. No one felt the opposed rolls slowed down play at all since everyone quickly caught on and as soon as they knew they were being attacked, they would roll their defense at the same time.
Couple of tweaks to make: what happens if someone parries with Improved Unarmed Strike and an unarmed attack and equals the attacker's attack roll? The Healing After Combat action point option seems a bit low since VP's come back rather fast as it is.
So in the end, I was definitely encouraged, especially considering I didn't know any of the people beforehand, nor did I know what level of d20 knowledge anyone would have.