The motivation for the scheme seems to be not so much to improve transport facilities as to encourage visitors to spend more money by making them stop at the "Gateway Towns". However if they make it more difficult for climbers to get the hills we'll simply go elsewhere and won't spend any money in Snowdonia.
And what will happen to the gear shops, cafes and pubs in places like Capel Curig if we can't park there (or are charged for it? I for one won't be getting off the bus just to browse the gear shops.
There was a time when it was common to climb in walking boots on grades up to VS. These days sticky rock shoes are used for climbing at all grades, and are the first piece of kit beginners buy (along with a harness). People have forgotten that it is possible to climb in boots.
At the standard of difficulty found on most scrambles ordinary boots should be entirely satisfactory. If you find yourself needing sticky soles, you should start questioning whether your're on a hard scramble or an easy climb, and should be equipped accordingly.
As a pair of climbing boots for lower-grade mountain classics, they might have a niche.