'tu'o (lo)' is the recognized-by-parsers, listed-in-word-lists version of 'lo'ei' for those who want such a thing but don't want to assign it to 'lo'e', and also I think that it is 100% CLL-compatible.
Yes, I think that's correct. I'm not sure what I will do, since I'd have to do some important unlearning to switch from {lo'e} to {tu'o}, but it is worth keeping it in mind.