Cleef was not an influence on my thinking in any way regarding the 4AB. Only Rathbone was. But, I can certainly see why the pipe Cleef smoked would influence you. He looks great and distinguished with that pipe.Wondering if this was as much of an inspiration for you as it was for me to get my two 309's (a smooth & a rusticated Donegal Rocky)? Pic below ....
Also, my admissions:
1) I have 10 Peterson System Standards, various shapes & models, but all were specifically ordered with Fishtail Stems. I didn't want to gamble on P-lip suitability, plus I don't clench. I like to hold the pipe in my hand. Having said that, if I found a P-lip that would fit one of my Systems, so I'd have two stems, I'd probably be willing to try it. Love the Systems.
2) I have about 35 (+) pipes & have never dedicated any to just one or one type of tobacco. I'm one of those who just grab a pipe & smoke whatever. Probably SACRILEGE to many (?) ... I know, I know.
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As far as your heathenistic, sacrilegious and scandalous approach to smoking, I can only say one thing to you in your hopeless decadence:
Sorry, man. I just couldn't resist having a little fun back with you.