My tuppence worth, being a brand new rider and very recent to Vstroms, my recent L4 purchase had a Garmin fitted, which, despite being quite old, worked wonderfully, bringing me home over 180 miles on my first ride, when I bought the bike.
I would have considered this kind of thing if it hadn’t been fitted, and my 1st experience is that it is very worthwhile.
To be able to keep my phone out of the weather, and still have a very decent routing between postcodes fixed and wired into the the bike makes things very easy.
Not cheap I believe, but depending on what you’re planning, for any kind of touring, it really is a simple way to achieve guidance.
👍 SnG.