Sorry first post (long-time lurker but never had much knowledge to contribute) but no I am not Brian Raymond and yes I have been in touch with him about purchasing rigs.
He actually sent out an email today explaining the issues they have been having with shipment. In previous conversations he had told me that while GPU procurement has been tight it hasn't been a major bottleneck for him so far. I'm sure there has been an onslaught of demand since the ETH price spike so that may have changed by now.
His email said there was an issue with the updated version of the MSI mobo's they received that caused some rig stability issues. This affected about 120 units according to him. They are working to resolve that issue and get those rigs shipped out ASAP.
I can understand the frustration as a customer with spotty communication but my gut feeling is that Brian is a straight up guy that is a bit overwhelmed with demand at the moment. I'll post again once my order is placed and received to let people know how that process was.