Got a sleeve of them in the post this morning Alan (my postie was hammering on my door at 6.05 because he couldn't get them through the letterbox!). Hopefully will have chance to put them to the test tomorrow or Friday and will report back.
Sorry Al, forgot to take them on Sunday when I played to (two handicap!) with an old Strata Ultimate that had already done a couple of rounds. Promise to try one on Wednesday, though it'll be a hard act to follow.