I am getting good results with convexity, and am trying to find a 1-piece convex pouch to save on the cost when I have to purchase my own appliances next year when my deductible starts over again.
Both Hollister & Convatec with the fabric tape on the outside edges seems to be working well for me in the 2-piece, but I want to try 1-piece.
I really like the "lock & roll" feature on the ones I have been using from both companies. Both have sent me samples of their 1-piece convex pouches. Hollister has the closure I like, but Convatec convex 1-piece has the clamp.
I have never used the clamp, but it seems like it would be more difficult to operate than the "lock & roll", especially in the middle of the night.
What is your preference?