Just to try and clarify a few little things:
Big Davy, I would assume that the pipers you saw at the Glasgow Pipers Club who play SSP or Border Pipes have generally extensive experience in the world of SSP/BP/GHB playing. Coming from many years of playing those instruments definitely shortens the learning curve to picking up the basics of playing uilleann pipes. However, picking up uilleann pipes and SSP at the same time or within a year of eachother would probably not do anybody any good.
Also, while I don’t wish to be insulting, from my experience, I’ve very rarely met SSP players not coming from GHB experience (e.g., just buying a set of SSP and trying to learn them first) that were able to play at all well. I’m sure some such people do exist, though I’d bet they’re few and far between.
Take a step back and realize that both of these instruments are very expensive and require a lot of commitment to play them well. Do not assume that SSP would be easier because they only have one octave. Getting the bag pressure right can be tough, and if you want to play with Highland pipe fingering (i.e., like what you saw Fred Morrison doing), then I personally think that GHB ornamentation is every bit as difficult as anything you’ll encounter on uilleann pipes, if not more so.
If you’re going to choose one, you have two choices that I would suggest.:
1.) Find yourself a good GHB teacher and start taking lessons on the practice chanter. You may not have any wish to eventually play GHB, but this is the best way to start and also a good way to see if you might like to play this music with minimal investment. After about 5 years of playing SSP and/or GHB with regular lessons on one or both, see how you feel about trying uilleann pipes.
2.) Find yourself an experienced uilleann pipes teacher that you’d be able to connect with somewhat regularly (even if it’s someone a bit far away that you’d only be able to see every few months). Get a practice set. Try it for a year, and if you like what you’re doing, keep at it. When your teacher thinks you’re ready, get some drones. After a few years, consider if you’d still like to try SSP and if yes, get a set and find another SSP player to connect with and show you how to do the basics.
If you eventually want to play pipes in sessions, uilleann pipes are far more versatile–mostly because there are very few sessions in the US where you’re likely to find a lot of people that play many Scottish tunes, and only a small number of Irish tunes fit on the SSP without significant alteration.
Good luck with whatever you decide to try.