Hi, first post here.
We do offer the BlieSMa 25 mm and 34 mm beryllium tweeters on our Sun Audio Purified 4 modular loudspeakers. Air and sweetness are superb. However, if you are looking for extension/wide dispersion, the T25A has a horizontal directivity of 160° up to almost 15kHz, and only -2dB @20kHz and 60°.
HiFiCompass has published a comprehensive review of the BlieSMa tweeters.