All depends on the quality of the WG. I've punted hungover with a few and it's been shite. I have, however, punted with others and it's been better than when I've seen them 100% sober.
One even got me under the covers, cracked open a packet of tabs to share and got me to drink a load of her pineapple juice as she gave me a slow, drawn out, gentle deepthroat blowjob. During the massage after, I nearly asked for a second hour before realising I was probably still technically drunk and headed back to the pub.