In my opinion they aren’t really tuned similarly. Combine that with the (MUCH) smaller scale and what happens is the patterns that are “easy” for violinists are a nightmare for guitarists. For example they can easily play a full arpeggio on just 2 strings. We’d need 3 strings.
Now, while it can be extremely challenging to adapt another instrument to guitar, it can be very technically rewarding too. Or even creatively rewarding. Guitar players tend to write things that work out nicely on the fretboard. If you try playing anything written for a different instrument that immediately goes out the window and you may stumble upon new fingerings or melodic patterns you’d never have thought to try.
Another consideration will be the articulation. Since you’ll have many more string changes (and awkward string changes at times) are you going to attempt picking all the notes? Are you going to try doing the same slurs in the original score (this will be physically impossible at times but can be approximated)?
In summary, I wish you the best of luck! There’s at least one person out there who’s conquered this approach.
P.S.
Mandolin and violin are tuned exactly the same. So depending on goals/purpose that could be a better option. You’ll still have your picking technique pushed but at least many of the fingerings would work out more nicely. Still though, overall from my experience, playing something written for a particular instrument on another instrument is non trivial. Especially considering “etudes” are written to exploit a particular technique (or techniques) that probably aren’t even applicable to a different instrument.