Blocked content / Membership

Hi
-do you know if the plugin will conflict with WP-Members plugin as this is what I am using currently to restrict content to unregistered users?

-the content will be word/pdf documents. What (if any) methods are there to ensure that once a document is downloaded it cannot be opened for free by another user? (this might be a MSWord or Adobe issue but have you come across this issue before?)

-would you recommend deactivating WP-Members and pay per view and just use your membership plugin to restrict/pay for content as an all in one solution? or can pay per view work well alongside membership (wp-members has its limits)

Thanks!