Chris wrote:

If it helps to keeps things running smoothly then I am all for telling the
tower. After is it not the case that communicate is one of the three
essentials in flying after aviate and navigate.

Its not as though is going to cost anything to say it.

If it helps to keeps things running smoothly then it should be a published best
practice, rather than something I find out about on r.a.i.

Having listened in on and participated in a lot of IFR departures where there
was no announcement of intent to commit IFR, I am reluctant to concede that it
helps to keeps things running smoothly.

In the absence of a specific instruction like "inform tower..." I'd put it in
the category of nonstandard radio procedure, along with "any traffic please
advise" and "with you".