As Gandalf makes his first appearance in the film, he is, naturally, smoking a rugged, long-stemmed pipe. And he is clenching. And not just clenching. The wizard is doing so while driving a horse-drawn cart. Across bumpy terrain. Sans shocks or struts.
Unless Jackson is a pipe smoker -- and I am not aware that he is -- there is approximately no reason to take anything pipe-related in the films seriously.
In the words of Christopher Tolkien,
"The chasm between the beauty and seriousness of the work, and what it has become, has overwhelmed me. The commercialization has reduced the aesthetic and philosophical impact of the creation to nothing. There is only one solution for me: to turn my head away."
the most likely cause is his pipe is imbued with magic
or perhaps it just sits happily clenched because he wills it to
LOL!
However, smoked while seated in a chair with arms, a 'warden is the penultimate of ease as you can sip the smoke with the slightest movement of your hand.
Yes! The churchwarden is as convenient for one thing as it is inconvenient for anther. It is a sitter's and holder's pipe, and for that it is the pipe par excellance.
Clenching a 'warden? Only momentarily, if I have to shift gears whilst turning or performing another manoeuvre which would be awkward or risky whilst holding a churchwarden (or any pipe) bowl in one hand.
Same. If I'm sipping a churchwarden whilst reading in a comfortable chair, I may clench it momentarily by my front teeth (perhaps resting the bowl on my trunk if slouched) while I turn the page.
I often see Ian McKellen when I go over to Battersea Park. A very pleasant fellow.
He always gives me a smile and bids me a good afternoon
You swim in celebrated waters, Mr. Morrison. If I ever make it back to your side of the pond, I'd like little better than to puff a pipe with you in Battersea Park.
I always found it interesting that churchwardens were so prominent in the LotR films. They were much less so in the books, where shorter pipes predominate.
Correct.
I also seem to recall churchwardens being in a late ‘70s animated version of the Hobbit.
Yeah, that endearing little foray into D&D-styled Hobbit-dom featured several Tyroleans: