We have engineered in a country cottage in Ontario Canada, cold dry winters, wet springs, hot humid summers, wood burning and no AC, never have had a single problem in 13 years. The construction of engineered hardwoods lends itself to lesser change due to moisture shifts. I swear by engineered after seeing how it has performed for us.

I have to add I would not adhere any wood product to a concrete slab, it will not last.

There may be a problem with lower concrete slab temperatures and the adhesives used. I believe most manufacturers have a minimum temperature range. Naturally we wouldn't expect the floor to perform as well under normal conditions, but I'm sure you've given that thought.