Has anyone ever used the Grecian Spike Pillars from Wilton?

I have a 4 tier 16-14-8-6 with pillars in between. The bride wants the grecian pillars and I wondered how sturdy the spiked ones were?

Thanks

I use them a lot and I luv 'em!! Quick, simple and easy! No doweling!
Here are some of my cakes that used them:

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=93774
http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=93756
http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=93754
http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=93750