Are combi/attachment-style gas hedge trimmers as good as dedicated units?

It depends on what you already own. Reviewers of the Husqvarna HA322 attachment praise the metal-case build and extended reach, but r/ryobi and other community threads warn that attachment setups 'get very heavy very fast' and tire users within 15 to 20 minutes. A dedicated handheld is lighter and better balanced for routine work; an attachment shines if you already own a compatible combi powerhead and want reach and versatility.