I bought the WXTools nut crimper a year back and recently used it for holding the cedar strips on my metal gate frames I'm building.
Mainly the 1/4-20 through 1/8 steel.
Wayyy better than trying to tap and much faster and more secure.
These crimp nuts are the way to go for thinner metals. Only issue was finding the best size drill bit, they all seem to take odd sizes (I needed an 'S'), but I agree that that is not so critical
I plan on using this everywhere I need.
The kit I have covers 1/4 through 3/8 plus the metric sizes between. A #12 on down will be the next addition.