Ok, I probably didn’t read your question closely enough. I had some Dynastar poles which did this, a plastic clip would open if you applied pressure. A good idea, I’ve got a damaged thumb from skiing with straps, has bits of titanium holding it together these days. I don’t have a suggestion but Leki have a good reputation.
I don’t use straps nowadays but they can be useful for a good, solid pole plant. I’d be interested to hear opinions.