My issue isn't so much the size/looks of having the converter (I've got a clashing LInksys WAP11) as much as the additional power cable and ethernet cable that could be eliminated if the wireless was built in. Plus if its built in, there's nothing to worry about getting the girlfriend to approve of...

(By the way, the linksys WAP11 I'm using is roughly the same cost as the netgear AP that Andy mentioned...)