Decision is entirely yours for taking such risks.
However, if you want an opinion, I've never had a professional Sony broadcast product failed on me during critical moments in my entire career in broadcast. Yes, they do suffer from wear & tear, etc, but since EX1 doesn't have any mechanical parts, I should think it is quite safe & robust to last you pass a year without any issues.
Do think about the savings vs. repair costs if *touchwood* imaging sensors, LCDs or logic boards go kaput within a year though...