both watches share certain similarities and also vast differences
GMT function on the 244 sucks cause it does not have an independent hour hand unlike the 16570. Setting the local time when you travel is a pain. While you can easily use the EXP2 as your travel watch, the 244 is more suited as a watch you use at home to track another timezone.
At 40mm and 22mm wide lugs, it's not actually get much street cred among the Risti's unlike other more exotic "calibre-d smaller Pams". Choices for straps might not be as wide as the regular 24mm lug width.
My take? keep your Exp2 and hook up a base/historic model like a 000, 005, 111, 112 etc......