This according to my field tests:
Any old blue tape is probably no better than cheapo masking.
The 3M blue tape will last maybe 2 weeks in direct sun before it starts to affect the gum (it actually says this in the fine print, so I timed it). If you leave it for a month, it won't peel off cleanly, but will still come off w/a thumbnail (much more work) a bit at a time.
As to the seams, they need to be checked twice a year, spring & fall. They can open up and wick in moisture which will turn into a mold & mildew problem. Using the late fall as a definite catch point allows a clean and dry application before onset of wet weather.
One nice thing about the Acryl-R 5522 is that it can adhear to itself, so some acetone cleaning and a short repair over existing will work for a while.
Haven't tried the new green tape yet. Seems pretty rugged.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project