The Sig522 isnt available yet.. You have other choices at the moment, like the GSG-5 (22lr clone of the Mp5)
as for the handgun,
What kind of 22lr you would like to shoot ? A sporting pistol, with a great trigger and ergonomy, or a plinking gun, with standard trigger and a LE/military look ?
If it's the latter, i'd advise you to get a Glock with a Advantage Arms 22lr conversion, real plinker that works great !
I had one, but had to sell it for another buy- (with regrets)
You can buy the 9mm pistol, and just get the 22lr conversion (slide, barrel and mag) along with it. You will be able to shoot both calibers according to your will.
100% reliability, and still great precision with a 25chf trigger work.
Can't help you with sporting 22lr.. this isnt my cup of tea..
For the dealers, if you dont want to shop with lagardere or Naturaktiiv or even Ingold waffen, there are 3 gunshops you can have a look in Geneva.
Daniel Roch, Atelier d'armurerie Roch Custom (in Vernier, just over the Harley Davidson Dealer)
http://rochcustom.com/
http://www.pistoliers.com/bourse_view.php?inpSearch=roch
or Cavioli
http://www.swissguide.ch/fr/Quincailleries-Outils/Geneve/353886_armureriepcavioli.html
or even, on the Place de Plainpalais, beside the GHI newspaper, l'Armurerie des Bastions.
Roch is the best I think, in geneva. But keep in mind. In Geneva, you'll often pay 20% more for the same guns.. that's just the way it is...
Of course, the invite is still up, whenever you want, at the indicated time schedules !
We need more people involved with guns and gunrights !