Sure thing.

This is the HTML in the "List View Description":

<div class="sch_published" style="width: 30px; height: 32px;float: left; margin: 4px;">
<span class="sch_pub-month">[event:startdate|MMM]</span>
<span class="sch_pub-date">[event:startdate|dd]</span>
</div>
<div style="text-align: left; margin: 4px;"><strong><a href="[event:eventurl]">[event:title]</a></strong><br />[event:startdate|f]
</div>

The events module settings (for the sub-calendar):
 General settings: Filter events by category
 Look and feel: theme: default; icon bar: none
 Look and feel: icon bar: none
 Event List Settings: Events Fields to display:  Selected: 11-Description

I "repurposed" some CSS from the blog module (I hope the blog developers won't mind ;-) and added it to the default stylesheet for the portal (via the admin/settings/stylesheet editor) to style the date graphic. BTW - I renamed the class names to avoid conflicts with the blog CSS:

.sch_published {
 display: block;
 text-align: center;
 float:left;
 font-family: Arial, Helvetica, sans-serif;
 border-bottom: 2px solid #cccccc;
 border-left: 1px solid #cccccc;
 border-right: 1px solid #cccccc;
 border-top: 1px solid #cccccc;
 background:url(/site/portals/0/images/clip-bottom.png) right top no-repeat;
 width:2.5em;
 margin-right: 5px;
}
.sch_pub-month {
 display:block;
 font-size: 10px;
 font-weight: bold;
 color: #ffffff;
 margin:0;
 padding:0;
 padding-top:1px;
 background:url(/site/portals/0/images/clip-top.png) center top repeat-x;
 text-transform:uppercase;
}
.sch_pub-date {
 display:block;
 font-size:12px;
 margin:0;
 padding:0;
}

Note that you will need to grab the two image files from the blog module installation: clip-top.png and clip-bottom.png and adjust the path to the images within the CSS as needed. You could use an image editing program to change the image colors if the red / white theme doesn't work for you.