On that note... I hope that it is a bit "easier" to find in the full release. I played through the alpha and left few stones unturned, but only found a few places to gain source. And the one where there was a ton to be had, consuming it would be at the detriment of being able to complete other optional quests and learn more in-game.
Don't like the idea of a bunch of great abilities which I basically can't use because I can't find source. Or, that I can use, but only very infrequently. Creates a significant disincentive to invest in those higher level abilities.
