SSD's in RAID are no different than HDD's in RAID.
I've had 2 60GB Agility in RAID0 for over 2 years now. Neither drive has failed.
I have tiered storage set up, so my documents and files are all stored automatically on my hard drive but my OS and programs are on the array. That way I get all the speed and it doesn't matter what happens to my OS drive, failure, corruption, virus, etc. I still have all my documents and whatnot on my HDD.
Also, if you do regular backups you won't have to worry about losing data.
SSD's in RAID 0 will double the speed of the SSD. You can probably break 1gbps on those drives.
I see no reason not to do it, except for loss of TRIM. However, if you read this article, you could get it running again. http://www.anandtech.com/show/6477/trim-raid0-ssd-arrays-work-with-intel-6series-motherboards-too