Argonaut has now many stock geo's...Chances are slim to none that anyone will own bikes from both because, as the British say, they're as different as chalk and cheese.
Argonaut is a very small shop (one man, Ben, last I knew) who makes only made-to-measure, built-to-specification bikes. There is no model year because there is no model. Every bike is different. There is no dealer network. Every bike is sold direct and all interaction is through Ben.
Guru is a small manufacturer employing many people. While the bikes are made-to-measure, you choose from a few models that are then sized to you. Stock options are available as well. Interaction is through the dealer network.
These two business models appeal to two different types of cyclist. That's why I doubt you'll find one person who owns bikes from both outfits.