Not trying to be offensive... but why would you buy a $3000 mirror-less camera with a fixed lens before upgrading your DSLR... especially when you can get a 6D for slightly more than half the cost of the RX1 and a 5DIII for the same price. I'm just baffled by that...
I really don't mind carrying my camera+lenses with me when I'm on vacation, but I travel a lot for work and there are times when it's not convenient or safe having a huge and heavy dslr around my neck.
I had a canon p&s for those situations, but last year it stopped working and when looking for alternatives with good image quality I heard about the RX1 release, so I waited for the reviews and since it more than lived up to the expectations I bought it.
You're comparing apples and oranges here.. no one buys a fixed lens mirrorless as a replacement to a DSLR.. as I said, I already had a 60d and was happy with it. What I needed at the time was something compact.
Also, at no point I mentioned I was on a budget, so it isn't like buying the RX1 was going to prevent me from upgrading my DSLR.
As for the RX1, I've never regretted buying it. I love shooting at 35mm and this lens is probably one of the best 35mm ever.