though i realise this is not what you specifically asked for BUTT...
yesterday i bought 2 sheets of what is labeled as "2.7mm LUAN" (which i question) for $9.97/4x8 sheet at the ORANGE BIG BOX STORE(the BLUE store doesn't carry it)
i use this stuff for making patterns/templates in my boat building projects where i will be needing to make several like parts and where i hope to some day build again
it is real flimsey when not weighted down butt lays well when asked
as for it really being LUAN i think not
the grain is too close & the fingernail test tells me it is a very HARD WOOD
it does not splinter like softwood when i cut it w/ the 24tooth 4-1/2" circular saw
the grain patterns are quite attractive to me and IMHO would be beautiful varnished

the tag/sticker said MADE IN CHINA so there is no way to know what type of glue is used and therefore should only be used for interior parts
this information may offer you an option
GOOD LUCK W/ YOUR QUEST
sw