Vitaliy M wrote:SO SCARPA INVERNO..OVER BOOTS OR WITHOUT?
Scarpa Invernos with stock liners you will probably want overboots. I wore Invernos with Intuition heat molded liners and insulated super gaitors and my feet were fine and it was a particularly cold year.
As far as weight goes Spantiks weigh 5 lbs 1 oz, Invernos 5 lbs 13 oz (US 8/EU 40). Swapping the stock liners for Intuitions will drop the Inverno's weight to 4 lbs, 15 oz. The Intuition liners are also significantly warmer than the stock liners. So, for $150.00 you get a lighter and warmer boot and if the Inverno has seen significant use the stock liner is probably packed out and not as warm as it used to be anyway.
As far as insulated supergaitors vs overboots, the only advantage supergaitors have over overboots is they are less bulky. 40 Below K2 overboots are as light or even lighter than many insulated supergaitors and are significantly warmer. Most supergaitors have a large rubber rand so the insulation only extends to the top of the boot whereas overboots wrap the entire boot in insulation. Likely the warmest and also one of the lightest supergaitors is the Outdoor Research X-gaitor. The insulation extends all the way to the boot's welt, but they are also the bulkiest insulated supergaitor.
Another important thing to keep in mind is that even the warmest boots aren't magic. If you don't take proper care to dry your socks out and stay hydrated and fed you can still end up with problems. Colin Haley got frostbite in Spantiks on Foraker largely due to his socks getting wet and dehydration.