I like them as my forces are generally multi purpose - WW2 Soviets and Commandos, Pulp gangs etc.
Just an idea for those using them - if you paint the edge a neutral colour (grey, brown, etc) the edge becomes much less obvious also if you put a dot of sepia ink at the interface where the feet are any clouding from the glue will vanish
My next force is Canadians in Dieppe, they will be getting shingle bases as it's linked to their back story, otherwise they'd be getting clear too!
I use 1mm acrylic DIY laser cut but I do like the super think bases.... might have to give them a go instead!