I've had it for at least a decade - not nice - fingers can be fine and then the circulation restriction kicks in, you can't feel anything, fingers go white, sometimes dark blue and black. It makes you appreciate good zipper pulls and hasn't inhibited outdoor stuff at all!
For gloves - first things, get yourself some climbing wrist gaiters - the Extremities ones are excellent and hard-wearing - they're made from polartec. underneath these I wear another pair of Woolpower merino fingerless gloves - this gives an excellent and warm pairing which works well. I don't winter climb, so can't attest to their use in such conditions, but for general wind-chilled walking, they work well. I pair them up with a pair of Buffalo mitts for really cold weather and again it works well.
For feet - always two pairs of socks - a liner - I use an old pair of Thorlo, and then a longer slightly thicker pair over the top. Wool is best, but again I've had good results with synthetic Thorlos too.
Felt insoles work well (again Woolpower) though they have no support to them, but in general work use, I always use felt - it is brilliant stuff. My one other tip is if you use thick socks, they'll be no good on your feet if the cuff cuts in - you need as much blood as possible getting to your extremities. For general work-a-day use, bamboo soft cuff socks from Sock Shop - two pairs in winter - they don't isolate your circulation as they were designed for diabetic use and people with oedema. For walking, like I said just make sure it is something that stretches well, but doesn't keep falling down
Hope this helps - it isn't pleasant, but is dealable with without the horrific drugs the docs give you - made me think I was having a stroke. Best thing is always to keep moving and if you have to be still make sure you're wearing something like a Buffalo shirt - the greatest bit of outdoor kit ever made (in my opinion).
Cheers