I have wrapped before and they definitely do make it easier to strip your fletchings to refletch, but they do add a little extra weight to the back end of your arrow which normally not where you need it. The cost isn't all that bad but does run up the cost to what is most times already a $12 + arrow.
I now do a spray laquer on mine and have been using it for a couple years now with no problems..The fletchings still strip a little easier than they would if they were fletched directly to the shaft. With a little acetone the paint most generally comes right off also. I haven't tried the blazers on any yet but have been shooting the fletched to my bare shafts for a couple of months now with no problem..Like you I shoot about a 4 degree offset and it fletches on perfectly....These vanes are so durable I can't believe it!!! I have a bag target that I have set up at 40yds and the center is getting pretty shot up and my arrows are starting to blow thru but with absolutely no damage to the Blazers...WOW they are tough
I painted a few of my arrows today and I'm going to fletch on the Blazers either tonite or tomorrow and we will see how it goes...Seasons only 10 days away here now!!!!! Can't Wait