the only rule that could even possibly be broken is the law of physics. lets remember that were possibly adding a good bit of weight on to the back of a medal model that has a big ole metal servo harness already on his back. if you can do this tactfully then go ahead otherwise the best chance i could see in this guy actually carrying the jetpacks on him would be rocket boots! or something like that
now enough nonsense. their is truely no rule that says your tech cant get a jetpack or a bike
now i would suggest the bike and jetpack on many occasions however depending on how your using the tech priest i would suggest one transportation over the other
if he is going to be kicking some hand to hand then jet pack obviously
if he is going to be fixing things then the best bet is a bike for obviouse reasons.
however the downside of this it would be really stupid to bring along servitors as they would restrict the movement of the techmarine and slow him down.
just my 2 cents
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