^ Thanks, looks like that may be a better option, but have to do some measurements to be sure that each sheet covers the whole depth of the speaker.
More on Decoflex & water based glues
Reply from manufacturer of Decoflex Veneer, and here she goes
So it doesn't seem that problematic as potential waves will be ironed out anyways. Looks like he is implying that I can go ahead, but should wait for the adhesive to dry before going on with oiling (laquering = oiling?)... Sent him a follow up, he won't get rid of me that easily