This tape rocks! For Emergency splicing operations, this is a must have! Actually, for ALL splicing applications, this tape saves me from carrying other materials, and it works like a charm. Coupled with some Super 33+ as an overwrap, it has worked well wherever I need it. I especially like that it is linerless.
I've worked hundreds of hours splicing cables and installing insulated terminations using "rubber" tapes (<25kV). This, being linerless, is not only the best (non-silicone) insulating tape available yet, anywhere worldwide, but is the easiest to install. I'll not mention specific products hoping to compete with this, but where tape, as opposed to other insulation methods, is preferred or required, 130c rules.
3M splicing tape is simply the best, in my opinion as a Marine Electrician. The tape is easy to work with and endures the test of time. The environment I work in is extremely hard on electrical and electronic devices. When you need to go back into a splice maybe years later, the tape is still pliable and like new.