If you are using the system memory for the ram drive, and using it for page file. it won't make any sense as the page file is use for when you runing out of system memory. so you take it from your left hand and put it to the right hand. it just make one more work for no benefit, unless you have a program that you access all the time and you want to dedicate a block of memory for it to be access faster.
just a thought.
cheers