Hello - has anyone had experience with the attachment migration service Fourlane started to offer?

I received this http://eepurl.com/iKVeSs the other day, had a consultation with them and I'm ready to go for it.  Been waiting 5 years for this kind of service to migrate 8k+ attachments.

Would love to hear anything about the service before I sign on the dotted line.

Much appreciated.

Keith