Yes,I run Gridcoin-qt by itself , no other clients.But it doesn't work.
I want to know:
If my gridcoin wallet is always out of sync,can I receive or send Grc?
You can send and receive as long as the funds you are trying to send/receive haven't already been spent previously.
Sent funds will send immediately, however received funds will only be available once you are synced up to the block which contains the sent funds.