I’ve done about 4,000 miles on one of those Axiom front racks, with 2 fully loaded large panniers, and have been pretty impressed. Only roads and canal towpaths, but its been good. If you use some padding and electrical tape around the fork, and get the adaptor nice and tight, they won’t swing into anything. Make sure you do a trial run at home before you go touring, to check they are properly attached, and take a 10mm spanner so you can tighten the fastenings if needed.
If you’re just doing casual touring anywhere fairly civilised, it does the job very well. If you’re going more remote, or mega long distance, go for something steel so you could get it welded if it breaks.