I don't agree necessary agree to that in general.
I have used x-tek 60lb double wing before. Overall, it isn't bad. There are two things I don't like. The corrogated hose is too long. The inflation is not standard. I would have switched these two items if I own one. I didn't get a chance to check the inner bladder material. If it is coated nylon like Halcyon or VDH, then it is good. If it is urethane like Oxycheq or DSS, I would definitely you can do better for the cost. But still, x-tek package cost is just high. From Leisurepro,
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It is already $727. These are not ready to dive yet. You will need at least two cambands at least. For apple to apple comparison to what I am going to compare it to, let's add scubapro STA + camband, which is $85. Making the total cause of $812. Halcyon Eclipse for $825. I am not saying you should get Halcyon Eclipse, but since this represents one of the highest end of bp/w, brand name and blings. If I were to spend that much, I will definitely get Halcyon. The customer support from Halcyon is 2nd to none.
There are also plenty of good quality bp/w setup you can get for $500 or less. And I can't comment on the relationship between your and the dive shop. My comment is purely based on my personal view on bp/w.
In this aspect, x-tek wing is very flexible and foldable and rollable easy to pack. But it is not unique to x-tek. I think the main items that has trouble fitting in carry on will be the fins. bp/w and regs are easy