Unfortunately, I won't be at RMAF, but do have interest in the cartridges that you mention. How much does the Etsuro retail for and how much output does it generate? The Kleos and Skala (are they still making the Skala?) are medium output carts.
The Cobalt Blue is a low output MC .25mv but compared to the Bordeaux at more than double the cost has all the same specs minus the sapphire plate that the Bordeaux has. Retail is 4750, but during RMAF I am doing promo pricing and have stocked inventory. Pm if you are interested.