Recently I played a hand of Badugi that really demonstrated the importance of playing all of your initial pat badugis in the same manner as not to give away the strength (or lack thereof) of your hand.
I was on the button in a four handed $40/$80 mixed game with A25. I raised and both blinds called. The small blind drew one, the big blind stood pat, and I drew one. Unless it was some weird trick play it was obvious that the big blind held a weak badugi.
So he bet out after the first draw and I raised unimproved. My raise knocked out the small blind and caused the big blind to break. I ended up winning the pot with my unimproved A25.