it's ok. some things it seems to be fine for others less so.
easier to remove
able to get it at pbk
crap paper backing more difficult to remove without breaking than tufo
you ride crits on it, and you'll get threads and wads of glue ejecting out from the tire/tape/rim interface
on my track wheels its been great. however on my road wheels that i routinely do crits on, the material coming out of the join makes me nervous (and hence i went back to the extreme). i can only assume its coming out cause the tire is squirelling on the rim bed. having said that i've ridden about 100+ crits on wheels using the velox tape and never rolled a tire. these are crits with 90 degree corners that you'll hit at 45kmh and then drive out of.