Well, is not the brighest day for Eng. Im acctually playing Scrapper with Explo, Alch, Scrapper, basically with a mix of marauder, zerk and soldier. The biggest problem of scrapper is the CD of hammer, Im trying Healling Turret, Alch gun, Shreeder and grenade with sneak gyro to solve some problems. Maybe Alch is not the best option for this composition but the results are ok for now... Pistols at WvW is a bad option, much professions can cleanse conditions too easy.