Hey! I really doubt the tip will break, at least not anytime soon. Every sword will break when used for what we do, but I think with the Trnava you can expect at least some 18 months of hard use before it snaps. I also think that the Moc feders are still somewhat thinner at the point than Trnavas. I've seen Moc's break, but after something like 2 years of hard use, which is a good long time for a sparring tool. Of course, flaws in Heat Treatment are possible, in which case the sword will break withing the first month of use - but in these cases, the smith can often not know there was a flaw in the HT of the blade.
So all in all, I don't think you should worry

also, how long have you had the Moc before it broke?