I do a bit of contract flying and one of the most important functions of a watch (to me, at least), is having a dedicated GMT/UTC subdial. We file our own flight plans and make position reports, ETA's, ETD's, etc in UTC. + the half hour timezone is important.
I've used my trusty titanium Skyhawk (0010-50E) which served me well, but it hasn't taken a beating well. So scratched and dinged up, the bezel has fallen off, crystal has been cracked, displays have gone blank, seconds hand has frozen , etc.
I really like the PMV65-2271, but it is far too expensive and no matter what they are advertised as, will not last in harsh/trying conditions.
Hence, enter the G-Shocks : GW-A1000 and the GA-1000.
To me, the GA is infinitely more usability for an actual pilot than does the GW-A, yes?
On the former, you cannot view UTC or any other function without losing the current time? And do you have to keep fiddling with the crown (like the Skyhawks..quite a pain in reality) to change modes, rather than a simple button push on the GA?
Also, how much of a "lack" is the absence of a tough movement or the solar function?