I know I've been using Vector Linux for 12 years so it definitely has longevity.
Some elements of Wolvix (particularly the control panel) have been updated and will appear in a distro called Linux Yarok this spring. Yarok has been around as a private distro since 2008 but the first public release is coming fairly soon. I know because I'm one of the lead developers. There will also be some bits familiar to Vector Linux users
eMachines EL-1300G desktop, 1.6GHz AMD Athlon 2650e CPU, 4GB RAM, nVidia GeForce 6150 SE video
CentOS 6.5 (will try VL64-7.1 soon)
Toshiba Satellite A135-S4727, Intel Pentium T2080 / 1.73 GHz, 2GB RAM, Intel GMA 950
HP Mini 110 netbook, 1.6GHz Intel Atom CPU, 2GB RAM, Intel 950 video, VL 7.1