yeah, i really, really hate these exclusives too... but lately a lot more shops carry them and they're easier to get (just like the spade of MF stuff from Bandai). what sucks is that at MSRP they're already pretty expensive. add the fact that it's an exclusive/limited release, you'd most probably have to pay double the retail price if you live outside Japan. This limited GBP set will likely cost more than a 1/60 VF-1 w/ Super or Strike parts.
i agree that the shaving cream doesn't look great, but i wouldn't mind if it came standard w/ a standalone GBP armor set, in fact it'd be cool. and yeah, some weathering will make the lines come out and it'll probably look better.