Yes, all reputable seal manufacturers should give clear guidance on how their seals should be used.
From my point of view, I would agree that it's not a good idea to fit intumescent seals directly opposite each other at the meeting edges of double doors for exactly the reason quoted above - that if it's a pressure-generating seal, they push against each other and can push the doors out of line and ultimately apart.
However, double leaf doorsets tend to need more sealant at the meeting edges than you would expect at the hanging edges or the leading edge of a single door. You can either do this by putting all the seal into one meeting edge, or you can split it between the two edges, but making sure that the seals are offset, so don't activate against each other. In the early days, when we had BS476: Part 8 it was common practice to put 30mm of seal at the meeting edges - 1 x 10mm at the mid line of one meeting edges and 2 x 10mm with one strip 5mm either side of the centre line of the opposing meeting edge. Now with BS 476: Part 22 and of course BS EN 1634 the amount of sealant needed is greater than in the past - talk to the seal manufacturers (you'll find links to several on the ASDMA website) and follow their guidance. Remember that intumescent seals are not all the same so you can't just mix and match to your heart's content.
.....and I thought that when the subject was 'stripping' I was going to find a hunky fireman wearing his boots and not much else!
