A possible practical drawback to the gambit is that White is more or less able to force a draw against Black's best lines, e.g. after 9.
Ebb and flow systems are flexible, with few practical drawbacks.
Theoretically, this doctrine is unquestionable; but it has practical drawbacks.
Although the shadow mask worked, it had a number of practical drawbacks.
Yet another more practical drawback is the conservative nature of the law.
And it may be just my Yankee parsimony talking, but I believe that complicating the simple life has practical drawbacks.
A plan for an Iraqi-run court has certain practical drawbacks, chiefly the time it would take to get it up and running.
There is also a practical drawback to your bare-knuckles plan: your friend could simply apply for a replacement card.
Some computer chess experts have observed practical drawbacks to the use of tablebases.
However, a practical drawback is that a well-prepared but unambitious White player can often enter lines leading to a forced draw.