Have a Bellevue but will obviously will only be able to comment on my specific jacket size compared to myself. I'm 5'6 130lbs and I got the Small, longer than I'd like honestly but it depends on how you like your fit. I like the cuffs to end very near to my wrist and it goes mid-palm for me. Jacket ends little bit lower than my butt, and I prefer mid butt length. So for someone my size, the Small is like 1.5-2 inches long sleeve and bottom wise for my tastes.
If they had an X Small it would be the PERFECT length for me, but Small is as...small as they go. So for a 5'6 it's like 2in longer than I'd like.
Sexy ass jacket though with the vest, looking so good on the slopes. Spring is here so in the cold mornings for first lift I'm rocking them both. Mid day when the sun is up and it gets warm the jacket comes off but I keep the vest on with a hoodie(went with just a t shirt and vest but took a slide and the hard pack chewed the fuck out of my arm. I wear the hoodie now for skin protection).