I don't if we're just round the house/in the garden, but I check it often to make sure the outside isn't wet! He lasted 3hrs in my Wild Child today with no cover, but then pooed I was trying to see how long it would last before the outside got wet!
I've never really tried without a cover, but will do outside when it's hot again. I love pretty fitteds but understand why you say it's a shame to cover them up - I'd just buy plain nice fitteds with funky covers. Therefore, need less covers and can save money for fab pockets. It's a win-win all round!
yes we use them without covers when we are at home, atm he just wears a nappy (and a bib...) as its so hot. We can last 2 to 3 hours before it gets damp on the outside, depending on which nappy type it is, i love our LLS day nappies, they last 3 hours no problem. I havn't tried going out without a cover yet tho, just in case. But i guess as long as you change them every 2 hours it wouldnt be a problem. I dont have a heavy wetter though... I think its a shame to cover up the pretty nappies too