Hire him, but look out for lack of attention to detail.
In my last job they talked a lot about the difference between being "done" and being "done done". The latter requires significant attention to detail, and especially a lack of "it's someones else's problem"-attitude.
While the substance of the work would likely be done satisfactory and on time, wouldn't you want him to do the equivalent of spending 30 seconds reading the letter over once, clicking on the red squiggly lines? If those 30 seconds are not invested when writing an estimate, is he going to get spend 30 minutes re-fitting the foo to the bar, so it's perfect rather than just "done"?
In my last job they talked a lot about the difference between being "done" and being "done done". The latter requires significant attention to detail, and especially a lack of "it's someones else's problem"-attitude.
While the substance of the work would likely be done satisfactory and on time, wouldn't you want him to do the equivalent of spending 30 seconds reading the letter over once, clicking on the red squiggly lines? If those 30 seconds are not invested when writing an estimate, is he going to get spend 30 minutes re-fitting the foo to the bar, so it's perfect rather than just "done"?