I would beg to differ with you on this one Jim.
To the best of my knowledge in the 20th Century not a single unit in the British Indian Army carried the Indian hilted tulwars. I would love to be persuaded otherwise. If you can provide any photograph or painting to prove your point I will gladly eat some crow.
The forces of the Native Princely States of course carried Indian hilted swords well into the 20th Century as I have already stated.
In the 19th Century on the other hand there was significant laxity allowed in the uniforms of the British Indian Army so much so that some soldiers in one unit would carry tulwars and others British Pattern swords as the attached picture shows:
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