I haven't, but as much as I like to shop at Uwajimaya, I find their prepared fresh food less than inspiring. I'd try Maruta before I'd try Uwajimaya. Would be interested in hearing back from you regardless of where you order it.
Here's an off-the-wall antiquity for you: Maybe 20 years ago, a prepared food cooler at old Uwajimaya regularly featured breaded and fried geoduck. Gnarly tooth and fun to explain to tourists. Is there any chance of finding such a thing these days?