Yup, and it's easy enough to do. It requires that you deploy SEP using the full unzipped package though (i.e. do not tick the "single .exe" option).
In the exported folder, you'll find the vdefs.zip file. All you have to do is replace this with the full.zip file from your SEPM (i.e. delete vdefs.zip, copy across full.zip into the package, and rename it as vdefs.zip).
You can grab the full.zip file from the below locations:
32bit Defs from:
X:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\Inetpub\content\{535CB6A4-441F-4e8a-A897-804CD859100E}\<Latest Definitions Revision>\full.zip
64bit defs from:
X:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\Inetpub\content\{07B590B3-9282-482f-BBAA-6D515D385869}\<Latest Definitions Revision>\full.zip
Once replaced, just install the package as normal and it'll run with the latest defs from the get go.