Hey
andymcdonald!
I got your PM but I'll answer here.
Anyway of the default vessels only Atlantis has EVA.
There are a few Add-ons which have it. Notable ones are (XR-series, DGIV, Shuttle Fleet) However there are
more.
Please note: There is a project underway to allow UMMU capability for multiple vessels called UMMUFA. However it is currently under Beta and I haven't heard of progress for a while. You can find the thread
here.
BTW: I assume you want the UMMU Capability on the DG-S because it has scram engines. You might want to download the XR1 by dbeachy1. It has both the scram and the 3d cockpit, with UMMU support. You can find it at his site
here.
On-topic: Sputnik, I remembered that there was an issue with UMMU CTD if there existed a large number of vessels in that scenario. I have yet to verify that though. I'll post back. BTW, when I say large I mean 30 or more vessels. Let me check still.
EDIT: Alright after testing with a clean install+UMMU. I was able to add up to over 75 vessels without a CTD. My test had included mostly of module1 spawned into default LEO with the Scenario_Editor. (I can't begin to say how useful that tool is.) Sorry for the false alarm. The problem probably had to do with an add-on or a ridiculously large number of vessels.