The module could be very useful tool but it is almost unusable due to very bad performance. For example drawing a table which has 350 rows and 10 columns takes ~60 seconds on Intel(R) Xeon(R) 1.86GHz. I did a quick glance on code and my impression is that it has O(x^2) complexity where x is number of rows what obviously doesn't scale very well. It seems the author is aware of the problem as one of comments in the source code says "This function must be totally rewritten one day, it is really slow, and ... dumb. ;)"
The final hassle that I encountered is that it warns copiously about undefined values. In my particular SQL request some column values are undef, and it is normal. It would be nice to have a property to set to treat_undef_as_no_space or something. I had to write the above snippet as