Indeed - thanks, Clive! To date, I haven't found these limitations to be too bad - on large work where the "slow rapid" might be relevant, it's generally in wood where cutting speeds are high anyway; low cutting speeds are generally on small work where it's not a problem. And as my whole toolchange process is very manual, swapping files at the same time doesn't take much effort. I have already picked up on the idea of prefixing filenames when post-processing with serial numbers so I run them in the right order.

However, this is just the kind of thing to have up your sleeve just in case... Let's hope the poachers stay just ahead of the gamekeepers!