I have two in cloth dipes and this is the response I just gave Mama_Wolf1982 in her thread (and I really do think a big bag you like is all you need, also I recommend one size fitteds or flats!):
I love bags!
Admittedly, I have too many. Still, I don't think you need an actual diaper bag. They tend to be more expensive, just because they're diaper bags. I vote for the bags within bags within bag!
I think any (attractive or practical, depending on the day) large bag works really well. Then I toss in a medium sized wet bag with diapers, a wrap,a small wet bag of wipes and another empty wet bag. I also toss in a small bag with spare clothes (x2 for my infant). I usually toss in a snack taxi or mimi the sardine lunch bag with munchies for the kiddos. Last but not least I toss in a bag with my wallet, keys, and cell phone. Yep. I have a lot of bags. My favorite these days is a green weekend bag form Lugg. Whatever bag I am using (sassy,canvas, duffle, backpack), I think it is important to have a wide opening, so you can see what you've got! If I am going to be gone a while I toss (loose, not in a bag :smile ) a few extra diapers and an wrap or soaker.
Ultimately you have to carry the bag all over, so make sure it is one you like. My DH is very flexible. He'll carry which ever bag is the going bag. Even if it is a big purse.