did this mod last week...highly recommend to anyone who've had to make adjustments for hot vs cold days.
initially i thought the 3-position clasp version would be sufficient...also as the length of the clasp is closer to that of the speedy's original. however, the 6-position version turned out to be absolutely perfect...and all 6 positions have ended up becoming very useful.
for those even slightly considering this mod, just get it done!