Cable tie will die quickly with road shmutz being thrown up there all the time.
Get a short piece of alu strapping and accept the added weight of two bolts and two nuts.
You must be using some crap zip-ties, all the ones I've ever tried to remove have put up a good fight. Conversely, aluminium strip will fatigue crack in very short order.
Nope, all UV resistant industrial ties; my experience may be coloured by their exposure to salt, sand and sub-zero temps.
I've never had to remove any, they've left of their own accord.
Cable tie will die quickly with road shmutz being thrown up there all the time.
Get a short piece of alu strapping and accept the added weight of two bolts and two nuts.