mixture of smoke seals

[bevfs]

Hi all,
60min fire doorset fitted on fire compartment wall, fitted with a mixture of blade smoke seals on both door leaf sides, with brush smoke seal along the top .
Apparently direct from manufacturer.
My question is do door manufacturers test with not only one type of smoke seal, but various smoke seal arrangements?
With the cost of testing with mixed smoke seals, is there any financial  benefit to the door leaf manufacturer? I know its down to confirmation test evidence of the doorset ,but is this a practice that fire door manufacturers generally test with not only one type of smoke seal but mixed smoke seals as well?

Any information would be beneficial

thanks