Actually, I took a look through this about two years ago (only the first movement). I have played some Chopin Etudes, and am currently picking a Scriabin one to work on over the summer. I kinda ran out of steam at about page 9 of 14 (from my edition). I'll try to give you an idea of what I remember being difficult about the first movement.
As mentioned earlier, the stuff at the beginning can be worked out with time, you don't necessarily need a study to help you get this. There's a large arpeggio in the right hand that comes up alot, and some joint and alternating chords with both hands.
The first thing that I found very tough was the left hand pattern of 16ths which comes up ALOT, and is the reason why I stopped playing this (I wasn't learning with a teacher, just on my own, so it wasn't a huge deal for me stopping learning it). This left hand stuff alone could make up an etude, and IMO is much more difficult than the left hand stuff in his Op 42 etude in C# minor which is one of his more common etudes. It's tough on its own, and there are big awkward chord leaps in the right hand while doing so. I tried breaking down the left hand stuff into sections. In the first 16th part, the first three notes make an Fm chord (lacking the Ab though), then there's two C's making an octave, then an Fm chord in second inversion, then another in root. So I had split it into a group of three, then two, then three, then three, then another octave of two notes. It was fine to remember for the left hand, but it scrambled my brain right up putting that with the right hand. I was relieved to see that there was another 16th configuration of groups of 3 arpeggiated notes that you could get with a simple 5-3-1 fingering. For me, even thinking about doing these up to speed made this mvmt way too tough.
In the Meno Mosso section, there isn't much raw technical difficulty, but I found it pretty tricky to get decent phrasing without over pedalling.
There's also some stuff before the first/second ending that I would have preferred reading on three staffs, but that's just my personal preference.
I find in Scriabin's stuff, he creates his own technical problems that you can't really solve by playing a standard etude like the op10/25 stuff. You'd probably be better off looking through Scriabin's own etudes to find similar stuff to this; the left hand fast stuff killed me, and the frantic jumps throughout were just exhausting to get down. It was just too much to take on as a 'for-fun' piece
Topic: Scriabin's 1st Piano Sonata