I have my randoneur bars angled so the tops don't sweep up but rather just angle back and maybe even slope ever so slightly down.
in that postion the drops are angled up slightly but still comfortable.
kinda see it in this pic (definitely not sloping up)
i don't think these are a revelation in comfort but they are ok. i currently ride a couple bikes with the flatter top bars as i think they do seem to dustibute the hnad wieght over a larger surface. that said i exerpienced pretty much the same numbness on the same tour i did this year with flat top bars as i have in previous years on the bike pictured above doing the same ride.