I have kissing without discretion on my profile, as, like many others, I can do the deed without it.. However even with kissing being on my profile, punters usually are quite surprised when I greet them with a snog- so perhaps this shows that they don't expect it/it isn't a driving factor in selecting a lady? Very few have specifically asked in the past if I kiss, but most never do! And if someone has a bad breath, and I avoid kissing, it does not seem to be a problem- yet to have anyone complain...
So I think that although guys bang on about GFE, and DFK being a deal breaker, in reality it's not... But maybe it's worth putting 'at discretion'? Just for the search purposes? Although if you 100% don't want to do it, then maybe not..xx