I only found one of them actually, didn't understand at first what they are for. Even when the guy gives the De-Stone made me think that Eevee was of some importance, but didn't actually think of this. Then i'll go and hunt the other for pages then to fill the time and explore a little more the maps waiting the next beta.Nice to see you commented about it and I liked the feedback you put up :)
The reason why you can buy the evolutions stones is pretty much for Eevee (and of course other stone-evolution pokemon) there. Have you been doing the "magical book" sidequest? You can find 4 Pages in beta 3 already (related to the reason why getting evolution stones had to be made as simple as possible).
Just asking, at the end it's still a pokémon game, so "gotta catch em all". Even if it's not, in the actually game i'm playing, i have only Eevee (didn't make it evolve), Venusaur, Blastoise and Charizard, just because i wanted to know the story, and that is coming out greatly.If this was a normal pokemon game, I'd probably make it that way but there are specific reasons for making it so pokedex won't be completeable in the game. The hack has lots of differences to original pokemon games (and most hacks) as you have seen already but there will be more to come. Beta 4 will somewhat cover the idea behind the final version so you'll see when I've got that one up :D
But no, all pokemon won't be catchable but almost every single one will be.