Cubase Artist 7.5 and Cubase 7.5 (and Nuendo, Wavelab, most of our VSTi's, etc) require the license to be placed on an eLicenser USB key (dongle). They are not currently available to be transferred to internal Soft eLicensers. Once a license has been placed on an eLicenser USB key, it can only be transferred to another eLicesner USB key (not an SeL).
I certainly understand your request. The upside of the physical key is that it allows you to install on as many computers as you would like, while allowing Steinberg to maintain license security. Personally, I hope that in the future we can offer our top level products as SeL licenses, but there are many logistics that need to be worked out for that to be successful for both the customer experience and maintaining license security (from programming to policy decisions about verifying deactivations, how many reactivations, etc).
I travel with mine everyday from home and the office (along with my iLok, my SSL key, and jump drives), so I use this to keep them together http://www.amazon.com/Case-Logic-JDS-6-Shuttle-6-Capacity-Black/dp/B0009Y7AX2/ref=sr_1_1?ie=UTF8&qid=1405601547&sr=8-1&keywords=case+logic+usb+case
I hope this information is helpful and appreciate your feedback on the licensing!