>>But, in France, you absolutely need a corkscrew <<

Some of us need one in the US, too... <img src="images/graemlins/grin.gif" alt="" />

I looked long and hard once for a good locking blade knife with a good corkscrew. Victorinox made a couple of longer-than-usual SAKs with locking main blades (a lot of play in the lock, but you can't have everything) with corkscrews- my favorite was the "picnicker" I think, but I also think it's discontinued. I bought two before they disappeared.

Laguiole has nice single-blade folding knives with corkscrews, but although the blade looks like it should lock, it doesn't.

I've reluctantly taken to carrying separate folding knife and cheap-but-lightweight "portable" corkscrew when travelling- the sort where the corkscrew cover becomes a T-handle. This frees up the choice of knife, but is far from an ideal corkscrew. We need for someone to come up with a good lockblade combined with a waiter's-style corkscrew with assist.