Exactly this! I love Monogram in handbags and SLG's but it was too "showy" for me on a Keepall. Plus I didn't want everything to be matchy-matchy. I debated the Damier Cobalt and the Monogram with Coquelicot trim - but I knew I wanted the 45 & 55 as a set and the Coquelicot only comes in 50. Plus, I found myself swooning every time I saw the Mono Eclipse IRL.
My Keepall's are for car travel only - which we do a lot of. I've used the 45 as my airline carry on but I don't prefer it. It's a little too big under a
coach seat and I don't like cramming my baby it in the overhead. I just ordered a Speedy B 35 My Heritage for those purposes instead. The Speedy will fit better under a seat and it's as bulky. I use the 45 for one or two nights when it's a casual trip and I don't need a lot of clothing choices. Otherwise I use the 55 for clothes and the 45 for all my extras - shoes, makeup case, electronics, etc.
I've only used my Keepalls about half a dozen times (thank you, Covid!) but they're wearing very well. I always get excited to pack them and I'm always happy seeing them when I pull them out of the car
Congrats on your new baby! Hope you get to enjoy it soon!