I bought my FS-60CSV back in 2005 particularly for its in travel capability. No issues with eyepieces, bino's or turrets coming to focus, you can always add extension tubes for whatever arrangement suits. Over the years I bought the other tubes mentioned by Matt. I recall when I bought the "CB" tube it was supplied with another stop ring (screws onto the focus tube), see :
http://starbase.dw.shopserve.jp/SHOP/SB-A059.html
The FS-60 series are just superb, so many applications whether it be terrestrial or astronomical.