Whilst any Tele Vue telescope can act as its own finder with a low power eyepiece it is still more convenient to have a dedicated finder scope as well as a red dot finder for initial pointing. My red dot finder of choice is the Telrad (red target rather than dot), but not on my TV-101 for which I use a Starbeam as it fits one of the clamshell slots and also fits in the Tele Vue case mounted in position. As a finder I typically complement my Telrad and main 'scope with an RACI finder but again not on my TV-101 for with I use a TV-60 mounted on a Tele Vue X-Y mount fitted into the other clamshell slot, (X-Y also remains fitted o the clamshell when in the case but not TV-60).
This way I can either use low power in the TV-101 and high power in the TV-60 or vice versa, (in fact the TV-101 is capable of a wider field than the TV-60 so which is the finder? I use either a 60 deg or 90 deg Everbrite diagonal in the TV-60. It's not RACI but I like the combination of the TV-101, TV-60 and Starbeam. I typically leave the 24mm Panoptic in the TV-60 and a higher power eyepiece in the TV-101. This saves me switching eyepieces in the 101 when I need a finder. I use this on either a Tele Vue Gibraltar, Losmandy GM-8 or AZ-8 as they all the the weight well.
If you want an RACI finder so as to match up with a chart more easily then a StellarVue 50mm or 60mm finder would be ideal but I'm not sure if they have a foot to suit the Tele Vue clamshell?