Practice what you preach
I have noticed certain teachers of mine who, in a less demonstrative way, have reached the same conclusion. Someone who has studied rabbinic mnemonic systems and seems to have used them himself to memorize the Mishna. Someone else who, in studying rabbinic literature, has taken upon himself customs and practices he found compelling. Following Rabbenu Tam's opinion in calculating the end of Shabbat, for instance.
I believe in this strongly. Not, of course, as a requirement. Obviously, not every scholar must take upon himself the lifestyle he is studying. But for me, there is a strong connection between the material I study and the life I want to lead.