There's a Dutch online payment option, called iDEAL. There

There's a Dutch online payment option, called iDEAL. There is an extension written for the WPMU plugin Membership.

I also would like to use it for the WPMU Events+ plugin.

Are the way your payment gateways are coded and implemented in the plugins a bit alike?
In other words: should it be a lot of work for the extension-dev to make the extension suitable for the Events+ plugin?

Cheers!