Yes from me.
Although, by his own admission he can have a somewhat abrasive attitude, he is far from the only person (including regulars) to have such a trait. I believe that the positives outweigh any negatives in this case.
Sacher has been active in the mission making community for a long time, not only making missions, but assisting others in doing so, particularly in the scripting aspect. More recently he has been involved in the creation of a framework module system, which will make "UO quality" mission making more accessible than ever for new or inexperienced mission makers.
Sacher has been making a tangible contribution to this community for a while now, and this poll is probably long overdue.