I've got a Farmer too.
The Alox handled models like the Farmer and the Soldier have a markedly thicker stronger blade than the red plastic handled models (I've measured it) and I believe the springs are also stronger. Also, the alox handle will withstand heat and DEET insect repellent - the plastic handles would melt.
It is difficult to get the Farmer in the high street, but this is actually a good thing, as they are readily available from on ebay - around £18 delivered from the UK, possibly less from the US where they cost around £10 plus postage.
My only complaint about the Farmer is the lack of a Phillips screwdriver and small blade. Otherwise it is IMHO a perfect every day tool. It is of course UK legal, small, neat and non-threatening.
I have not been impressed with Victorinox leather pouches (thin leather, weak fastenings) and had one made by a saddler to fit the Farmer. It cost me more than the knife, but I think it was money well spent.
To be honest Victorinox knives represent fantastic quality for peanuts. It is only because they are so ubiquitous and cheap that people do not rave about them more. The level of precision and durability is quite remarkable.