Weapons training is intense and dangerous. In fact if you're not cracking bokuto and getting the occasional bruise, you're simply not training hard enough. What you say here and what you teach about weapons, might get people hurt. So if you're going to recommend "training without tsuba" at least do so responsibly and from a position of demonstrated knowledge and experience in proper weapons training.
What are you talking about? You know nothing of what I teach about weapons or not but feel you can make such a slur?
Anyone who says blatantly that weapons training is intense and dangerous sounds like they may be being a bit irresponsible by issuing such statements.
Now, if you can answer the question I put then fine. If you feel you would never do so then say so.