Personally I've never had a problem with using it, it's saved my a good few quid in replacement tyres over the years.
Magnetic Mel was coined a while ago for sadly obvious reasons.
Not the fastest of riders, but not slow either and I've had no issues with tyre balance.
Use the bike everyday for commuting into work with a bit of motorway "progress making" in the mix and it's been fine.
Muzzy recollection of having it in my tyres when in Germany
too, no issues at an indicated 145+ there either.
Our very own Nooj supplies
Puncturesafe, it's the one I use so was glad to hear that he was punting it.
Much rather give a Foccer the cash than a HUGE supplier mesen.