I doubt tactility (from a learning perspective) really comes into play while reading a book, as opposed to on a screen. That's not to denigrate paper book reading as an enjoyable experience, but let's not go overboard :)
The effect's subtle. I read Wycoff's Mindmapping in high school, and have tried the techniques off and on. One interesting idea is that you're constantly making background connections, and these can play a small but non-negligible association in the mind. So if you always chew a minty gum when doing your math work, it helps a bit in bootstrapping you back into that frame of mind later, like smelling bacon sizzling and feeling restful from associating it with family breakfasts.
Whether it works or not, well, I think it does, but it's no panacea. I prefer to think of it as a hint to start preloading a frame of mind (like the Jargon File's second use of 'swap' [0]). When I sit with a second hand book that's got that mild musty wood and glue smell, it gets me in the frame of mind to read. YMMV.
For me it's a matter of quickly referencing material. For whatever reason, I seem to recall where things are roughly by the thickness of the stack of pages. The percentage bar on the Kindle doesn't replicate that. And flipping between pages on a device just takes too long. So, I have a hard time reading any sort of reference material on a Kindle.
It's never as fast and document search on e-readers seems to be straight word match rather than any form of intelligent indexing. If I don't recall where something is, it's almost always faster to use the book's index than it is to naively search through the doc, in my experience.
Whether it works or not, well, I think it does, but it's no panacea. I prefer to think of it as a hint to start preloading a frame of mind (like the Jargon File's second use of 'swap' [0]). When I sit with a second hand book that's got that mild musty wood and glue smell, it gets me in the frame of mind to read. YMMV.
[0] https://www.catb.com/jargon/html/S/swap.html