NO!

In case that wasn't clear - NO! I DO NOT TAKE PAYMENT AT CLOSING!

Way too many seemed to loose the paperwork, even though I followed up with hard copies, phone calls etc.
Way too many didn't buy the house and there just wasn't an escrow.

The straw that broke the camels back was one where the closing company screwed up the closing and I didn't get paid. I then had to go to my client and try to collect. It took over 6 months of getting small payments ever 6 weeks or so to get paid. Trying to get blood out a turnip.

So when someone asks, the answer is NO!
JF