I used an nhaler sourced short kr808d-1 battery on a boge hardcap carto and it was more than fine for initial impressions. I think there are probably a lot of 808 bat / carto combos that are more than good enough to evaluate the setup, if you know the shortcomings of what you are testing and what better alternatives the market offers. For example, if your test 808 doesn't activate immediately, know that some like the bloog do. For testing purposes I think cartos varry by resistance and draw for the most part, a lot of the more overall important differences between other cartos and good performing bloogs are more longterm and may well be missed on a few trial puffs with a decent battery and full carto.
So do try any 808, but judge the experience against other models that may overcome whatever shortcomings the one you test may have. If you test another brand 808, and find you like it except for X, you'll likely find that bloog has found a way to overcome X, and likely Y too!