I got interested in IR photography long before the fancy stuff there is today.
Pentax S1a (no TTL metering, screw-mount lenses)
Only way to buy the film was in bulk and load your own cans
Maybe one lab in 1000 could process it decently so you tried yourself or found the 'one'
It's amazing to see how perceptions of the world change based on the different lighting. As you can see from the pics above, there's a new level of image definition too. It would be interesting to see side-by-side images of 'natural' light and the IR.
I know of at least one silk-screen artist who used IR photos as a source because of the difference with things like trees, foliage and reflections ( like on the car in the last pic.)
Nice Post P!