I tp in Askar and I ws in Heca... I haven't looked back.
As far as the original topic... there are three useful pieces of gear in the Drachen +1 set.
Hands:
They are a great ws piece until you can get Hecatomb Mittens. I just recently obtained Aurum Gauntlets but I haven't done much testing to determine how they compare. An often overlooked stat is Wyvern Accuracy though. I often swap to Drachen +1 if I'm chasing a kited mob as the wyvern can usually keep up better then I can.
Head:
I upgraded this originally for more viability when soloing. The added VIT helps tick jump damage up the tiniest bit as well, but it's not a deciding factor by any means. Nowadays it's not as used though. I tend to wear Askar or WT while solo and then macro in Drachen > Wyrm > tp piece.
Legs:
Yes, the accuracy is nice but that isn't the only deciding factor. Drachen Cuisses +1 are hands down one of the best solo or healing pieces. The 10% Wyvern HP can make a nice difference, especially stacked with other Wyvern HP gear like Homam feet. Yes, the 10% is available on NQ AF, but the added accuracy and defense make it a more than worthwhile upgrade.
For the record, I upgraded all 5 pieces. >.>