It uses one of those capacitance switches so accidental turn on is generally unlikely from being pressed against stuff in the pocket.

Skylumens indicated for the Tange that battery replacement by general users was not recommended. Disassemble might be somewhat difficult from tight fit and/or glue and/or reassembly could be tricky …but by flashlight enthusiasts are a different matter.

Again, all of the above info is for the Tange, I have no knowledge of the Rofis unit. On the basis of the Rofis description in OP, there would appear to be some differences. For example, the mode sequence is different, Tange is L-M-H-M-L… whereas TC1 is described/pictured as L-M-H-L-M-H… Also the TC1 desciption talks about a 3-sec Lock-out, the Tange does not appear to have such.