Supplementing the RX1?

Having had the RX1 for about 10 days I love it and with the EVF it ticks all the boxes for street, Landscape and city photography etc.

However this is my only camera and it my first camera with a fixed focal length!

The temptation is to buy a supplementary camera BUT I am concerned that if I bought say a Canon 60D would I find myself using this more frequently due to is flexible lens options?

I occasionally find I could do with some reach, and do like wild life photography but its probably only 10% of my overall photography.

should I just perceiver just with the RX1 on its own and take photographs within its limitations or supplement it?

anyone else had this dilemma?

Ian