Font Changer works well for me too. Let's you back up default font as described above.
Sent from my HTC Incredible S using xda premium
Phone model: HTC (Incredible S)
S-Off/Root method: revolutionary.io
Bootloader: Blackrose (hBoot 2.02)
ROM: (ARHD 4.0 by mike1986.)
Kernel: by hunterwu v2.05-battery_life (3.0.16)
Working mods: (ext4 tweaks by mike1986., a-GPS patch v3.1 by crypted, ultrasmooth rosie by Hamdir, V6 Supercharger/3GTurbo/KAK by zeppelinrox)
Note of wisdom that sounds flaky unless you get it:
Witness art set free, just once, and never be bored again.