Such terminations in -ist were very common at one time; my collection includes swimmist, sparrist, ballist, walkist, shootist, saloonist, and several others.

actually knowing my deep secret ouiaboo tendencies I'd have probably gone for [the name] Amelie

… unto my chamber aloft now will I go And lie on the bed that knoweth the wailing of my woe, With many a tear bewatered since the day Odysseus fared With Atreus' sons to Ilios.

‘Well, I’ll bet you half a dozen of claret on it; come!’ said Wilkins Flasher, Esquire, resuming the conversation to which Mr. Pell’s entrance had caused a momentary interruption. […] ‘I never bet half a dozen!’ said the other gentleman. ‘I’ll take a dozen.’ ‘Done, Simmery, done!’ said Wilkins Flasher, Esquire. ‘P. P., mind,’ observed the other.