Other fields were applicable.
Ridcully felt around, probing the air and ground with an exceptionally weak form of Telekinesis. Though most applications of Telekinesis upon the battlefield were fairly brute-force in nature, there were subtle uses of the discipline, of which he was a reasonable user. Not to the extent of a specialist, but it was useful all the same.
One of the more common uses of Telekinesis by a Sanctionite was the manipulation of delicate materials and objects, where extremely precise amounts of warp energy was applied continuously to the item in question to achieve a desired result (without the hassle or danger of poking it manually, it had to be said); The principle here was the same - A negligible amount of power applied to produce a negligible telekinetic effect in a broad radius - Interpreted, he knew where things were, at the least analysis.
Pyromancy, too, had it's uses as an additional sense.
While commonly seen as straightforward walking inferno generators, Pyromancers did find their discipline having subtle uses, particularly for those who interpreted Pyromancy in the form of Entropy, as opposed to the obvious 'Heat' - Scholarly discussion among Sanctionites suggested it war more a discipline of destruction (Typically through fires, for fire's role in uncontrolled destruction), with improved control allowed controlled destruction.
Here, applying the knowledge of pyromancy and it's principles within the Materium, one could observe the extant heat output, and hence a thermovision of sorts.