Never encountered either. If it has anything of that bitter, beer taste, I won't like it. I did once find something called "Cola Beer" (it also came as "Lemon Beer") in Poland which was quite palatable. I think ,however, that was along the lines of a shandy, which is not so much girly as for children.
It's Belgian, and no, it doesn't have the traditional 'beer taste' at all:
http://en.wikipedia.org/wiki/Gueuze
(kriek is basically geueze made with cherries)
I'm personally a fan of Mort Subite and I think that's one of the least 'ale like' brands, but there are plenty of Belgian breweries that make it (Lindemans is pretty common to find here). There are some micro breweries that make superb versions, but of course I can't remember any of them now. You should be able to find it in London in plenty of places. Otherwise, if you pass through Belgium, they have it in every bar, usually a selection of brands (both on tap and bottle). I've even heard it referred to as 'Brussels Champagne'!
And it comes in plenty of fruit versions besides kriek if you're adventurous (and feel secure enough in your masculinity not to be put off by the 'girliness') like 'pêcheresse' with peach, 'framboise' with raspberries...