Safe enough, yes. But safer than my PM3 RDV4 with the ProxLF coil? Certainly not. I don’t know about the PM Easy though: it’s possibly safer than a regular, non-ProxLF coil.
And there’s another thing: maybe it’s just me, but I just don’t encounter very many readers that the blue cloner is compatible with. So I have to use the PM3 anyway, because it’s the only reader that handles everything. But it’s probably just because of where I live and what’s mostly used around here.
As for portability, do you often have to program your implant on the road? 