FluentValidation or xVal

Question

Hi Guys

I am currently reviewing xVal and FluentValidation. I am looking for the following:

1. Ability to keep entities POCO and would prefer not to use attributes/data annotations - I know FluentValidation can do this but have not seen an example of xVal?
2. Ability for jquery/ajax to called validation on the server - I see xVal does this, can fluent?
3. Client-side validation - would like to right rules once and use cliet-side/ajax validation.

Any tips from the trenches appreciated.