I've been using Crypto as a means of payment for years now, mainly Bitcoins, in my country you can actually buy a lot of things with crypto, this is probably due to the fact that i'm mining.
This is all online, i've never bought anything Face to Face using Crypto and 99% of the time i'm using Bitcoin because all the stores only accept Bitcoin, i'd love to see stores accept Litecoins, i've had to Email the "Bitcoin payment provider" tons of times because the transactions can sometime take ages and often you only have 10-15 Minutes on you to; 1 Send Bitcoin, 2 get a "1" confirmation before the time runs out! however on some smaller purchases there seems to be a 0 conf confirmation.

using Bitcoin as payment is great most of the times, but i do think Litecoins would be better.