Wouldn't count on getting the 175 on upgrade after being on it as an FO. With the huge night/day difference between the rates that FOs on the 175 vs. the obsolete fleets are getting hours now choice upgrade slots are likely to be more contested, especially uncertain for people on the normal ~18 mo. upgrade path. I'm 12 months behind with essentially no flying, and so is everyone else hired around the same time into the WSCOD. The situation seems even worse on the CRJ side but may actually balance out w/ more flying on rsv.