Treasure: I'm thinking about getting this bundle as well sometime later during the week (I generally don't like to rush my purchases-and, true enough, I already had my eyes on the games I got from this Insomnia sale so far). However, thing is I already have Blocks that Matter from the Humble Store, so I wonder, if I buy the bundle, I guess my DRM-free copy will probably vanish in thin air($3.74 wasted !- that is I won't have like 2 drm-free copies) but I'll keep the Steam key I got that way
and get the bundle steam key (which is giftable while the other isn't, as I found after making the purchase). Is that so? Thanks in advance for your answers.
No, if you already have it in your Bundle library, it will not get "overwritten" by the new one. The DRM free copy should stay there. You will still have your DRM free game from before, and you get an additional Steam key from this bundle.
Other than that, this is a very good bundle. Shame I got all the games from before...