how much cheaper is it than pebbletec finish? no reason a properly installed pebbletec finish shouldn't last you 10-15 years (if not more) assuming water quality is kept up.
the finish is not going to have an impact on chemical load, other than a new pool having pH rises. but that's easily handled with additions of muriatic acid, and its cheap too.
the finish looks nice, are you able to see it installed in a recent pool? if you like the way it looks and the price is right, then you should consider it. just don't base that decision on manufacturer issued pseudoscience

there is a lot of incorrect info on their website "selling" the product. like I said, go see it in person and make your decision based on if you like it or not.
more important is what equipment is in your bid specs? I would recommend posting a full list here for input. there are usually a ton of things the pool builders like to add on that are not needed or wanted (I.e. UV systems, mineral packs, ozone, etc) and sometimes important things that are missing with plumbing, etc. we have a lot of knowledge here, use it to your advantage.