I practice a conflomerate of the arts and that may be considered a bastardization of the FMA. We use what we have found o work and throw away what doesn't. We study every type of the FMA and find what works. The rest is thrown away. We may revisit them to see If they have application in certain stages, but we only use what works. I study Progressive Kali Silat which is heavily ingrained in the Dan Inosanto Blend. We have taken much of what Inosanto does and have put in other thing and taken out others. So, "Do I study a batard system" absolutely. I however, believe that any good system should and does take the best from other systems and apply them to what works.