For about 10 years I trained exclusively in Wing Chun and Escrima. The ratio of time spent was about 75% Wing Chun and 25% Escrima. -Looking back, I think I might have been better off having spent a bit less time doing chi-sau and a bit more time doing Escrima sparring and "live" Escrima drills.......
Escrima helped give me good insights into timing, rythm, use of range, transitioning, and using my eyes, which I did not get to the same degree from Wing Chun.
As long as it is not taught in a dead or robotic way (which unfortunately, some schools do) Escrima is an excellent complement to almost any art.
I don't think Wing Chun is so limited that I can't do it when I wrestle, box, kickbox, or fight by MMA rules, nor am I so limited a student that I can't improve by training in each of those forums. -Andrew S
A good instructor encourages his students to question things, think for themselves and determine their own solutions to problems. They give advice, rather than acting as a vehicle for the transmission of dogma.
-Andrew Nerlich