I've got zero experience with them.... Just passing along what Jeff told me, as I inquired about his fish and he offered me that info.
We all know different people have different experiences so maybe it will work out just fine, but maybe it's just a matter of time? Jeff did say it was fine for a long time then once it hit about 13-14" the problems arose.
I keep my 14" vulture with my rays and he causes no problems but is a pig when it comes to eating. I actually have a 5" unidentified catfish that puts the run on my 14" vulture cat. I guess is comes down to individual personality.
So far it's a good alternative to a lince.