My first thought would be yes, the WWP's that archons and Haemonculus carry are simply the man-portable versions of much larger ones that can allow vehicles to pass through, I'd have thought that if vehicles are required, they'd send a small force through to secure a site long enough to set up a larger version. Not sure if there is any official fluff for that reasoning though, I know there was an example in a black library book where DE snuck in and kidnapped a load of space marines, and the deathwatch novels included an example of dark eldar raiding a craftworld.
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