I'm primarily a guitar player but also play sax, a little keyboards (but usually not in public) and several other instruments. Bass, drums, learning flute, and everything in the high school band room. I started guitar at age 5 though, and had no idea what grandeur was, much less a delusion...
The guitar at that time was just something to make noise, my uncle caught me banging on his and told me to play it right. I said I didn't know how, he said he'd teach me. He did. It's been an addiction ever since, for over 45 years now...I have a feeling my family might put one in my coffin with me when I go...
By the way, I have played a piece on guitar from saxophone. It is called "Take Five" by the Dave Brubeck Quartet.
Great song, I played it with the high school jazz band, and was disappointed when the alto sax player got the solo. (I played baritone and did solos too on it) always liked playing it though, mainly because of the oddball 5/4 time signature.
I saw the same Ritchie Blackmore quote and have been using it for years myself, it's great advice for guitar players to copy sax solos. The main thing about sax to me is you can get it so smooth and melodic, and if you can do that on guitar you're accomplishing something. I also advise beginners to never, ever pass up a chance to play some guitar with a better player. You'll have to work for it and you'll always learn something. I've seen way too many times young guys hear me in a music store or pawn shop, put the guitar down and won't touch it again, afraid I'd embarrass them. If they say anything about it I tell them to ALWAYS grab a guitar and play.
Since I did it long ago, I've also always advised all musicians to learn different instruments. It helped me a lot, I got out of high school in 73 and still listen to a song and wonder if I could stick a decent sax part in there. (I have an alto now, and a tenor that sounds horrible or did until the pads went south) I suck on keyboards, tendon to the ring finger of my left hand was injured at about age 12 and I have limited use of it, especially palm down for keyboards, so I have to use only my thumb and pinkie, the other fingers all require that other fingers move. That means if I go for a key with my middle finger, the ring finger hits one too..somtimes I can keep it from happening, and use the index or ring fingers, but it's not easy. What's more of a problem is that once it's down I can't pick that finger back up... But I still try to pick up and learn any instrument I can get my hands on.