You can also try a Shadow SH-965 NFX with only one foil under the bass side bridge leg. A bit quiet, but sounds better with one foil only (you have a spare one then), but sounds better than a Realist IMHO. You need a battery and should carry a few spare ones with you in case you forgot to pull the plug out of the battery adapter. The battery adapter also works as an impedance buffer, so any amp would work.
You can use both foils, but that makes your action higher (no big deal if you can compensate with adjusters, but you should not think any bass has them and could be lowered by a millimeter more).
You might want to open the battery adapter (four screws) and out in some (rubber) foam to get rid of some rattling.