Yes - particularly as the estimated return from Tissot is 6 June.

And then I think, do I really want to risk somebody's job just because they were a bit ham-fisted in dealing with me and are probably following a repair policy straight from head office anyway.

I guess that's something you can query? Whether it is the head office policy.

I think others have covered most of this. I'm just left with the "grumpy old man" thing. This doesn't seem all that grumpy or old to me.