I think it's a very good suggestion.
the most important lessons of my life came from a 70% from people who were not bassplayers.
An incredible experience was playing with musician from other countries with a strong rhythmical aspects, and I can hear now their influence on my playing, on each instrument (bass, stick, viola da gamba).
From teachers, I learned so much from an amazing teacher of partiture reading at conservatory, a man with an incredible culture, and each lesson was like a long journey in several aspects of music, about compositions style and techniques, about life of composers and the use of each instrument (for example, when explained me the use of the resonance of acoustic piano structures in Debussy compositions it was amazing), and so on... hours spent listening to him that now I miss so much!
I believe that playing with good musicians and listening to lessons that come from other players are an incredible tool for becoming a better musician. For technique, of course, you need a bass teacher, but then you can find new and personal solutions maybe trying to copy some elements that you like in the style of other players.