The Mini DV tape manufacturers especially Sony are not very open in that they generally will not let it be known if the tapes are "wet or dry."
The
Wet or
Dry description refers to the tape ( coating) lubricant and does not affect where or how it is specifically used.
As such any decent make can be used either at home or on trek it shouldnt matter.
Sony apparently stopped using the wet lubricant after a furore of malfuntioning camcorder tape heads which needed to be professionally cleaned when different tape
types were used after using its tapes( the mix is quite unkind to tape heads)
I think they still have rogue batches or may have furtively gone back to using the "wet" coating on occasion after the bad publicity had died down. Not too long ago , the newly released
FX1 HD camcorder heads have proved sensitive to using different tapes. In Response, Sony relased a batch of tapes "optimised " for HD recording and appropriately more expensive

: That is a typical Sony response
To reiterate Roys Advice, In short, where possible, stick to a particular tape from one manufacturer and you will avoid the hassle of mixing .