Molten - I saw how Yabert tied his in parallel a while back which led me to thinking there has to be an easier way! There is a company that makes a clip that grabs onto the tabs on the cell groups easily but I still don't trust it. I never run the vehicle below 3.2V/cell which is another reason I think I'm fairly safe. The small wires used could also somewhat act as a fuse themselves - but I agree the absolute safest way would be to use a fuse and a proper BMS that is using that harness to measure individual cell voltages.
As for the BMS itself, it is one of the eBay "SUPER HAPPY FUN TIME BMS 60A" that can be bought for about $30 I'm seeing. Since I only have it tied into my charge circuit which is somewhere around 15A, I can easily get away with the low current BMS. I randomly check my cells from time to time and they have never been off even slightly - again likely due to the fact they came from the same complete Volt pack.