Haven't used one, but, I can see where it may work better than the more expensive (and larger) tools. I have one of the larger (about the size of a bolt cutter) crimpers. There many places in an RV where it would be impossible to get that big crimper into the work area.
With that smaller tool, you could get it into a very tight space, and squeeze it at an angle, with a channel lock plier.
Another option, might be to use some Shark Bite fittings. No crimper required.
18 Nissan Titan XD
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Wife and I
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