But not AS fine as your own style's founder Suenaka sensei who (surprise surprise) trained extensively in other combat disciplines ;
"Roy Yukio Suenaka Sensei, founder of Wadokai Aikido™, is one of contemporary budo's most experienced practitioners and best-kept secrets. Born in Honolulu, Hawaii, Suenaka Sensei's martial instruction began under his father, Warren Kenji Suenaka, who taught his son budo basics and carefully selected his primary martial tutors. These included such legends as Okazaki-ryu Kodenkan Jiu-jitsu founder Henry Seishiro Okazaki, Kosho-ryu Kempo's legendary James Masayoshi Mitose, judoka (and later, aikidoka) Yukiso Yamamoto, and celebrated kendoka Shuji Mikami, from whom Suenaka Sensei received a nidan (2nd degree black belt).
Suenaka Sensei began his aikido study upon Koichi Tohei's 1953 visit to Hawaii, and continued his study directly under Founder Morihei Ueshiba O'Sensei at the Aikikai Hombu for eight years, beginning in 1961. That same year, Suenaka Sensei received an aikido menkyo kaiden (master-level proficiency) teaching certificate from O'Sensei, and became the first person to open a successful aikido dojo in Okinawa. He also commenced eight years of private study with renowned Matsumura Seito and Hakutsuru Shorin-ryu Karate-do Grandmaster Hohan Soken, receiving from him the rank of rokudan (6th degree black belt). In addition, Suenaka Sensei continued his judo and jiu-jitsu education at the Kodokan under famed Meijin Kazuo Ito, who personally sponsored Suenaka Sensei's promotion to sandan (3rd degree black belt) in judo and jiu-jitsu."
As I study with a teacher who also practices other M.A. (judo and Krate). I can see his experiance in other M.A. affects his teaching, and so I wonder, can I stand on the shoulder of a giant or must I try to emulate his steps?
I guess part of the reason Morgan Wible does not feel a need to learn other M.A. is he has taste and ideas from them already in his teachers regular lessons. I know this is the situation in our Dojo, we do not mix M.A. but my sensei often gives examples from other M.A. and we practive against Karate style attacks on a regular basis ...
So I wonder, can the teacher experinace affect the requisites of the students, and up to when?
(In fact, my Sensei incourages us to learn additional M.A. and In took a year of Karate with him on my 3rd year of studying Aikid, which turend out to be too soon for me. Years later, I practiced TKD combined with scenario S.D. with another teacher, in parrallel to the Aikido, only to find my basic approach to the scenarios was much more sophisticated and influenced by strategy compared to other students who did not have similar experince tom and were beginners or just practiced with the TKD teacher).