I'm not a huge fan of serrations either and definitely wouldn't carry a serrated knife as my primary in the woods. That said, for a back-up knife in a survival kit, I wouldn't really worry one way or another; the serrations may not be a benefit in a survival situation but they aren't really going to be detriment either.

For me, I'd think other considerations (like cost, durability, construction, compactness) trump my serrations/no serration preference when looking for a back-up knife. For example, I would prefer the BG Scout to an Opinel even with the serrations (although, it looks like the price went back up on that Scout so it is no longer a proper comparison ... the sale must've ended!).